They're also sometimes available on the NHS for men experiencing severe distress as a result of ED, but only after an assessment at a specialist centre.

If you don't meet these criteria, you can get these medicines on a private prescription from your GP. This means you'll need to pay the full cost of the medication. Prices vary, but on average four tablets costs around £20.

Be careful buying medicines online

It's possible to buy ED medication over the internet, but you should be very careful doing this as there are many websites that offer fake medicines.

These medications aren't regulated and the ingredients in them can change from medicine to medicine. They could cause unpleasant side effects or may not be suitable for you.

It's best to see your GP before buying medicines online. They know your medical history and can discuss whether you might benefit from treatment.